1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * PCC (Platform Communications Channel) methods
9 #include <linux/mailbox_controller.h>
10 #include <linux/mailbox_client.h>
12 struct pcc_mbox_chan {
13 struct mbox_chan *mchan;
18 u16 min_turnaround_time;
21 #define MAX_PCC_SUBSPACES 256
23 extern struct pcc_mbox_chan *
24 pcc_mbox_request_channel(struct mbox_client *cl, int subspace_id);
25 extern void pcc_mbox_free_channel(struct pcc_mbox_chan *chan);
27 static inline struct pcc_mbox_chan *
28 pcc_mbox_request_channel(struct mbox_client *cl, int subspace_id)
30 return ERR_PTR(-ENODEV);
32 static inline void pcc_mbox_free_channel(struct pcc_mbox_chan *chan) { }